Paper-making machine.



F. N. HAMLIN. PAPER MAKING MACHINE. APPLICATION FILED MAY 8, 1909.

Pal fiented May 17, 1910.

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P. N. HAMLIN. PAPER MAKING MACHINE. APPLIOATION FILED MAY 8, 1909.

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P: N. HAMLIN, PAPER MAKING MACHINE. APPLJIIUATIQN FILED MAY 8, 1909.

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FREDERICK N. HAMLIN, OF AUSTIN, PENNSYLVANIA.

PAPER-MAKING MACHINE.

Specification of Letters Patent.

Patented May 1W, 19114).

Application filed May 8, 1909. Serial No. 494,736.

To all whom it may concern:

Be it known that I, FREDERICK N. HnM- LIN, a citizen of the UnitedStates, residlng at Austin, in the county of Potter and State ofPennsylvania, have invented certam new and useful Improvements inPaper-Making Machines, of which the following is a specification,reference being had to the accompanying drawings.

My invention relates to paper pulp machines.

In the art as heretofore developed there are two classes of pulpmachines known in the trade as wet machines and decker machines. Thesehave been made and used as two separate and distinct machines andoperated as such.

My invention has for its object to provide certain improvements in thewell known wet machine which will render it capable of use, at will,either as a wet machine, or as a decker machine.

A further object of my invention is to provide such a combined machineof a very largely reduced number of parts over the two separate machinesand consequently of a much lower cost to manufacture and operate.

A further object of my invention is to economize in the use of felts inthe wet machine, as well as in lubricators, and in general wear andtear.

The machine known in the trade as the wet machine comprises a vat inwhich a wire cylindrical screen or mold is driven by an endless feltpressed against it on the top as it is passed around a couch roll, beingpractically driven by friction. The pulp stock is gathered out of thewater in the vat on the wire of this mold or screen, and picked ofl theface thereof by the felt and carried by it over rolls to press rollsfrom which it is either scraped or cut and placed in a marketablecondition.

What is known as a decker machine comprises a vat in which is mounted acylindrical screen or mold, on a shaft driven by suitable power, and acouch roll, covered with felt, yieldingly held in contact therewith. Thepulp is gathered on the wire of the screen or mold, as in the wetmachine, and taken therefrom by the felt cover of the couch roll, fromwhich it is scraped, or otherwise removed, and deposited in suitablereceptacles to be further operated upon.

My specific improvements are designed to produce a single machine fullycapable of all of the operations of both the wet and decker machines,having no extra parts over the wet machine except the couch roll anddriving mechanism of the decker machine and in which the only adjustmentnecessary to change from a a wet to a decker machine is to shift thecouch rolls and start the driving mechanism of the decker machine.

WVith all of these objects in view, my invention consists primarily in awet machine of the class described and means whereby the couch roll canbe shifted and a decker couch roll substituted therefor.

My invention further consists in a wet machine provided with theordinary feltdriven cylindrical screen or mold, the ordinary couch roll,a substitute couch roll, means for substituting the one couch roll forthe other, and means for changing the driving power from the felt to thescreen shaft.

My invention further consists in the improved specific construction,arrangement and combination of the parts involved in my improvedmachine, all as fully described hereinafter, and afterward specificallyclaimed.

In order that others skilled in the art to which my invention appertainsmay readily understand its construction and operation, I will nowproceed to particularly describe the same, in connection with theaccompanying drawings in which Figure l is a View principally in sideelevation, of an ordinary pulp machine known as a wet machine havingpart of my improvements applied thereto, other parts being omitted, andparts shown in section, the parts being in position to be operated inthe well known manner of this class of machines; Fig. 2 is a similarView of the right hand portion of the machine as shown in Fig. 1 withthe parts in position to be operated as a decker machine; and Fig. 3 isa View partly in elevation, looking in the direction of the arrow shownin Fig. 2, of that portion of the machine which operates as a deckerparts being shown in section.

1 is the vat into which the pulp is pumped before being formed intosheets.

Journaled in suitable bearings 1s a shaft '2 upon which is secured acylindrical screen or mold 3.

4: indicates the-base of the machine upon which are mounted side frames5 and 6, the

side frames being extended and connected laterally to support a screw 7which receives a hand screw 8 upon the lower end of which are supportedsliding bearings 9 for the upper press roll 10, the lower press roll 11being mounted in suitable stationary bearings 12 supported in the frame4: said lower press roll being secured upon a shaft 12 which carries agear wheel 13 and is driven by any suitable power (not shown).

At suitable points in the machine are mounted guide rolls 14, 15, 16,and 17, which are provided with suitable means, as for instance screws18 operated by hand wheels 19, for adjusting their positions in order topreserve a proper tension in the endless felt band 20 which passes fromcouch roll 21 over the roll l t, the lower press roll 11 and the guiderolls 1T, 16, 15 and 22, to and around couch roll 21, in its passagebearing against the cylindrical screen 3 and ordinarily, by such contactdriving said screen or mold.

The construction .hereinbefore described is that of the ordinary machineknown in the art as the wet machine and before referred to, the couchroll in such well known machines however, being also mounted in themanner in which I mount it. In my machine l pivot at any suitable placeon the frame of the machine, as at 23, a pair of arms 24: one on eachside of the machine, on which pair of arms are mounted slidable bearings25 for a. shaft 26 which carries the couch roll 21, the bearings beingadjusted in position on the sliding arms and secured by means of pins 27entering holes 28 in said arms, in order to assist in maintaining propertension in the felt band 20 and to A rin as at with the cylinder in thevat.

29, is secured on the arms 24.

The mechanism described completes my form of wet machine and in orderthat I may use my machine as a decker machine I provide a second couchroll 30 secured upon a shaft 31, mounted in bearings 32, slidable onarms 33, pivoted at Set on brackets 35 secured in any suitable mannerupon the vat l, the arms 33 being also provided with sliding wei hts 36.

So long as the couch roll 21 is in position, in contact with thecylindrical screen 3, and the machine driven by suitable power appliedto the shaft 12 of the lower press roll, the operation will be that ofthe ordinary wet machine, as before stated, but in order to convert themachine into a decker machine, the arms 24 are raised to the positionshown in Fig. 2 and held there by engaging a rod 37, pivoted to the sideframe 5 of the machine, hook on the end of which engages the ring 29,and the couch roll 30 is disengaged from-a rod 38 depending from theceiling or some overhead support and lowered from the position shown indotted lines in Fig. 2 to that shown in full lines in the same figure,in which position it will rest upon the cylindrical screen or mold 3.The parts of the wet machine being now out of connection with the mold 3it is necessary that the mold be driven by other power than from thepress roll 11 and felt band 20. I therefore projectthe shaft 2 of themold 3 through suitable stuffing boxes secured to the sides of the vat,as at 39 in Fig. 3, and mount upon it a pulley L0, or other means forreceiving power from any suitable source.

In operating my machine as a wet machine, the pulp, taken up upon thewire of the cylindrical mold 3, is taken therefrom by the felt band 20and carried by said band to the press rolls from which it is eitherscraped or cut, and afterward disposed of in the usual manner.

In operating the machine as a decker machine, the pulp is taken up onthe wire of the cylindrical mold 3 and from thence taken by the couchroll 30 which is covered with felt.

To deliver the pulp from the couch roll 30 I have provided a doctor 41,Fig. 2, pivoted at 42 to the top of the vat which is provided with athin edge to lie close upon the surface of the couch roll 30 whichcauses the pulp to pass from the couch roll upon and over the doctor inits inclined position as shown in fulllines in Fig. 2, from whence it isdropped into the inclined trough 43, Figs. 2 and 3, being conducted tosuitable receptacles provided to receive it.

hen the machine is used as a wet machine, and there is consequently nouse for the doctor or scraper a1, it is turned lover into the positionshown in dotted lines in Figs. 2 and 3 in which it serves to cover thetrough 43.

I have found by practice that the change from a wet machine to a deckermachine can be made in less than five minutes.

All the parts except the couch rolls and their connections may be of anyordinary description.

Much time and labor is saved and many appurtenances necessary for theuse of the old separate machines are dispensed with.

Having thus described my invention what is claimed is:

1. The combination with a machine of the character described comprisingpress rolls, a couch roll, a felt band passing around a press roll andthe couch roll, a cylindrical mold contacting with the felt band, of asecond couch roll, a felt covering on said second couch roll and meanswhereby one couch roll may be substituted for the other.

2. In a machine of the character described comprising driven pressrolls, a couch roll, a felt band passing around a press roll and thecouch roll and driving the latter, and a mold contacting with the feltband and driven thereby, of a second couch roll provided with afelt-covering, means whereby it may be substituted for the driven couchroll, and driving mechanism for the shaft of the cylindrical mold.

3. In a machine of the character described comprising press rolls, afelt band, a pair of levers pivoted to the frame of the machine, a couchroll supported by said levers and engaged by the felt band, acylindrical mold, a second pair of pivoted levers mounted on themachine, and a second couch roll mounted in bearings in the last namedpivoted levers, the location of the pivoted levers on the machine beingsuch that either of the couch rolls may be brought into properrelationship with the cylindrical mold as may be desired.

4. In a machine of the character described comprising a vat, acylindrical screen or mold therein, means for applying power to drivesaid screen direct, a swinging shaft, a driven couch roll carriedthereby, a second swinging shaft, a second couch roll carried thereby,and means for bringing either of the couch rolls into contact with thecylindrical mold, as may be desired.

5. In a machine of the character described, the combination with a vat,of a cylindrical mold mounted therein, a trough on the side of the vat,arms pivoted on the top of the vat, a couch roll journaled in bearingson said arms, and a pivoted scraper for the couch roll adapted to serveas a cover for the trough when not in use.

6. The combination, in a machine of the character described, of pressrolls, a couch roll, a felt band passing around a press roll and thecouch roll, a movable support for said couch roll, a vat, a cylindricalmold rotatably mounted in said vat, a driving mechanism for the shaft ofthe cylindrical mold, means for holding said support to maintain saidcouch roll in operative position with respect to the mold, a secondswinging support, a second couch roll mounted on said swinging supportand provided with a felt covering, and means for holding said secondswinging support tomaintain said second couch roll in operative positionwith respect to the mold.

7. The combination, in a machine of the character described, of a vat, acylindrical mold rotatable therein, a movable support, a couch rollcarried by said support and adapted to receive a felt band, a secondmovable support, a felt covered couch roll carried by a second support,and means whereby one couch roll may be maintained in inoperativeposition when the other is disposed in operative relation with respectto said cylindrical mold.

8. The combination, in a machine of the character described, of a vat, acylindrical mold rotatable therein, a movable support, a couch rollcarried by said support and adapted to receive a felt band, a secondmovable support, a felt covered couch roll carried by a second support,supporting means for said supports, whereby one couch roll may besubstituted for the other, and means whereby said cylindrical mold maybe positively driven.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

FREDERICK N. HAMLIN.

Witnesses:

L. A. HORN, E. H. STEWART.

